CN103982989B - The detection method of a kind of auto Air Conditioner leaving air temp and system - Google Patents
The detection method of a kind of auto Air Conditioner leaving air temp and system Download PDFInfo
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- CN103982989B CN103982989B CN201410232323.3A CN201410232323A CN103982989B CN 103982989 B CN103982989 B CN 103982989B CN 201410232323 A CN201410232323 A CN 201410232323A CN 103982989 B CN103982989 B CN 103982989B
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Abstract
The present invention relates to the detection method of a kind of auto Air Conditioner leaving air temp and system, specific as follows: control unit of engine obtains engine water temperature Teng and engine speed Reng, and transmits to air-conditioner controller; Air-conditioner controller calculates the temperature Theater of heats according to engine water temperature Teng, engine speed Reng and evaporator temperature Tevap; Air-conditioner controller calculates air temperature Tdisch according to the temperature Theater of heats, evaporator temperature Tevap and blender door motor influence coefficient P1. Accurately calculate the leaving air temp Tdisch of automatic air condition, thus self control air conditioning can accurately control its leaving air temp, improve the comfort level of environment inside car.
Description
Technical field
The present invention relates to automobile air conditioning technology field, be specifically related to detection method and the system of a kind of auto Air Conditioner leaving air temp.
Background technology
At present, along with expanding economy, automobile industry also obtains significant progress, and consumer is also more and more higher to the requirement of each side such as vehicle safety performance, comfort property. At present, automatic air conditioner system of vehicle replaces automobile manual air-conditioning system gradually, is widely used in automotive field. Auto Air Conditioner relies on air-conditioner controller, by reading in multiple sensors signal and certain algorithm, controls temperature damper, thus automatically adjusting air temperature. And the accuracy of transducing signal directly affects the control of temperature damper, and then affect automatic air condition leaving air temp.
In prior art, for two-region or multi-region automatic air condition, general facial wind pipe and the foot's air outlet that leaving air temp sensor is arranged on air-conditioning box, for detecting the leaving air temp of automatic air condition, and controls pattern air door and the aerator of automatic vehicle air-conditioning according to the leaving air temp detected. Being detected that by temperature sensor the method for air temperature needs more temperature sensor, the cost making automatic air-conditioning system is high.
In addition, for single district's automatic air-conditioning system and part two-region automatic system, in order to reduce cost, automatic air-conditioning system there is no the leaving air temp sensor of the leaving air temp being arranged to detection automatic air condition, but calculate air temperature by evaporator temperature and engine water temperature. The leaving air temp calculated by evaporator temperature and engine water temperature is relatively big with the actual leaving air temp deviation of automatic air condition, and the control of Effect Mode air door and aerator, thus causing that environment inside car comfort level does not reach requirement, affects the performance of automatic air condition.
Summary of the invention
It is an object of the invention to overcome shortcomings and deficiencies of the prior art, it is provided that the detection method of a kind of auto Air Conditioner leaving air temp, accurately detect the leaving air temp of auto Air Conditioner, and then improve the comfort level of environment inside car.
The purpose of the present invention is achieved through the following technical solutions: the detection method of a kind of auto Air Conditioner leaving air temp, it is characterised in that comprise the following steps:
S1 control unit of engine obtains engine water temperature Teng and engine speed Reng, and transmits to air-conditioner controller;
S2 air-conditioner controller calculates the temperature Theater of heats according to engine water temperature Teng, engine speed Reng and evaporator temperature Tevap;
S3 air-conditioner controller calculates air temperature Tdisch according to the temperature Theater of heats, evaporator temperature Tevap and blender door motor influence coefficient P1.
As preferably, temperature Theater=K1* (Teng Tevap) the * Reng+K2*Tevap of described heats, wherein, heats COEFFICIENT K 1 is constant, and heats COEFFICIENT K 2 is constant.
As preferably, described leaving air temp Tdisch=P1*Theater+ (1-P1) * Tevap, wherein, blender door motor influence coefficient P1 is constant.
As preferably, engine water temperature Teng and engine speed Reng is transmitted to air-conditioner controller by control unit of engine by CAN.
As preferably, described evaporator temperature Tevap is obtained by the temperature sensor detection arranged on an evaporator.
Another object of the present invention is to provide the detection system of a kind of auto Air Conditioner leaving air temp, it is characterised in that including:
Control unit of engine, obtains engine water temperature Teng and engine speed Reng, and transmits to air-conditioner controller;
Evaporator temperature sensor, detects evaporator temperature Tevap, and transmits to air-conditioner controller;
Air-conditioner controller, calculates the temperature Theater of heats according to engine water temperature Teng, engine speed Reng and evaporator temperature Tevap; Air temperature Tdisch is calculated according to the temperature Theater of heats, evaporator temperature Tevap and blender door motor influence coefficient P1.
As preferably, engine water temperature Teng and engine speed Reng is transmitted to air-conditioner controller by described control unit of engine by CAN.
As preferably, described evaporator temperature Tevap is obtained by the temperature sensor detection arranged on an evaporator.
The present invention includes advantages below and beneficial effect compared to existing technology:
(1) present invention calculates the temperature Theater of heats according to engine water temperature Teng, engine speed Reng and evaporator temperature Tevap, and calculate air temperature Tdisch according to the temperature Theater of heats, evaporator temperature Tevap and blender door motor influence coefficient P1, accurately calculate the leaving air temp Tdisch of automatic air condition, thus self control air conditioning can accurately control its leaving air temp, improve the comfort level of environment inside car.
(2) present invention is by the correction value of calculated leaving air temp Tdisch computation schema damper positions and blower voltage, and according to result of calculation control model motor and aerator respectively, improves the comfort level of environment inside car further.
(3) calculated leaving air temp Tdisch is compared by the present invention as feedback signal and target leaving air temp, calculate its error, and control blender door motor according to this error passing ratio integration method, improve the comfort level of environment inside car further.
(4) present invention need not at the leaving air temp of the position mounting temperature sensor detection automatic air conditions such as the facial wind pipe of air-conditioning box and foot's air outlet, it is achieved cost is low, is conducive to promoting the use of.
Accompanying drawing explanation
Fig. 1 is the flow chart of the detection method of auto Air Conditioner leaving air temp in embodiment;
Fig. 2 is the corresponding relation figure of engine speed and heats COEFFICIENT K 1 in embodiment;
Fig. 3 is the corresponding relation figure of engine speed and heats COEFFICIENT K 2 in embodiment;
Fig. 4 is the corresponding relation of blender door position and blender door motor influence coefficient in embodiment;
Fig. 5 is the theory diagram of the detection system of auto Air Conditioner leaving air temp in embodiment;
Fig. 6 is the corresponding relation figure of leaving air temp and pattern damper positions in embodiment;
Fig. 7 is the corresponding relation figure of leaving air temp and blower voltage in embodiment.
Detailed description of the invention
Below in conjunction with embodiment and accompanying drawing, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
Embodiment
As it is shown in figure 1, the detection method of a kind of auto Air Conditioner leaving air temp, detailed process is as follows:
S0 air-conditioner controller sends communication request information by CAN to control unit of engine.
S1 control unit of engine receives and returns confirmation to air-conditioner controller by CAN after communication request information; Obtain engine water temperature Teng and engine speed Reng, and acquired engine water temperature Teng and engine speed Reng is transmitted to air-conditioner controller.
S2 air-conditioner controller calculates the temperature Theater of heats according to engine water temperature Teng, engine speed Reng and evaporator temperature Tevap. Particularly as follows: the temperature Theater=K1* of described heats (Teng Tevap) * Reng+K2*Tevap, wherein, heats COEFFICIENT K 1 is constant, and heats COEFFICIENT K 2 is constant. Described heats COEFFICIENT K 1, heats COEFFICIENT K 2 are demarcated each through engine speed Reng and are obtained, the corresponding relation of described engine speed Reng and heats COEFFICIENT K 1 as in figure 2 it is shown, the corresponding relation of described engine speed Reng and heats COEFFICIENT K 2 as shown in Figure 3. Described evaporator temperature Tevap is obtained by the temperature sensor detection arranged on an evaporator.
S3 air-conditioner controller calculates air temperature Tdisch according to the temperature Theater of heats, evaporator temperature Tevap and blender door motor influence coefficient P1. Particularly as follows: described leaving air temp Tdisch=P1*Theater+ (1-P1) * Tevap, wherein, blender door motor influence coefficient P1 is constant, obtaining especially by blender door location position, the corresponding relation of blender door position and blender door motor influence coefficient P1 is as shown in Figure 4.
Calculated leaving air temp Tdisch is compared by S4 air-conditioner controller as feedback signal and target leaving air temp, calculates its error, and controls blender door motor according to this error passing ratio integration method; The leaving air temp Tdisch computation schema damper positions obtained according to above-mentioned calculating and the correction value of blower voltage, and according to result of calculation control model damper positions and blower voltage respectively.
As it is shown in figure 5, a kind of detection system realizing auto Air Conditioner leaving air temp, including:
Control unit of engine, obtains engine water temperature Teng and engine speed Reng, and transmits to air-conditioner controller;
Evaporator temperature sensor, detects evaporator temperature Tevap, and transmits to air-conditioner controller;
Air-conditioner controller, calculates the temperature Theater of heats according to engine water temperature Teng, engine speed Reng and evaporator temperature Tevap; Air temperature Tdisch is calculated according to the temperature Theater of heats, evaporator temperature Tevap and blender door motor influence coefficient P1; Above-mentioned calculated leaving air temp Tdisch is compared as feedback signal and target leaving air temp, calculates its error, and control blender door motor according to this error passing ratio integration method;The leaving air temp Tdisch computation schema damper positions obtained according to above-mentioned calculating and the correction value of blower voltage, and according to result of calculation control model damper positions and blower voltage respectively. As shown in Figure 6, the corresponding relation of described leaving air temp Tdisch and blower voltage is as shown in Figure 7 for the corresponding relation of described leaving air temp Tdisch and pattern damper positions.
Engine water temperature Teng and engine speed Reng is transmitted to air-conditioner controller by described control unit of engine by CAN.
Above-described embodiment is the present invention preferably embodiment; but embodiments of the present invention are also not restricted to the described embodiments; the change made under other any spirit without departing from the present invention and principle, modification, replacement, combination, simplification; all should be the substitute mode of equivalence, be included within protection scope of the present invention.
Claims (6)
1. the detection method of an auto Air Conditioner leaving air temp, it is characterised in that comprise the following steps:
S1 control unit of engine obtains engine water temperature Teng and engine speed Reng, and transmits to air-conditioner controller;
S2 air-conditioner controller calculates the temperature Theater of heats according to engine water temperature Teng, engine speed Reng and evaporator temperature Tevap;
S3 air-conditioner controller calculates air temperature Tdisch according to the temperature Theater of heats, evaporator temperature Tevap and blender door motor influence coefficient P1;
Temperature Theater=K1* (Teng Tevap) the * Reng+K2*Tevap of described heats, wherein, heats COEFFICIENT K 1 is constant, and heats COEFFICIENT K 2 is constant;
Described leaving air temp Tdisch=P1*Theater+ (1-P1) * Tevap, wherein, blender door motor influence coefficient P1 is constant.
2. the detection method of auto Air Conditioner leaving air temp according to claim 1, it is characterised in that: engine water temperature Teng and engine speed Reng is transmitted to air-conditioner controller by control unit of engine by CAN.
3. the detection method of the auto Air Conditioner leaving air temp according to any one of claim 1 to 2, it is characterised in that: described evaporator temperature Tevap is obtained by the temperature sensor detection arranged on an evaporator.
4. the detection system of an auto Air Conditioner leaving air temp, it is characterised in that including:
Control unit of engine, obtains engine water temperature Teng and engine speed Reng, and transmits to air-conditioner controller;
Evaporator temperature sensor, detects evaporator temperature Tevap, and transmits to air-conditioner controller;
Air-conditioner controller, calculates the temperature Theater of heats according to engine water temperature Teng, engine speed Reng and evaporator temperature Tevap; Air temperature Tdisch is calculated according to the temperature Theater of heats, evaporator temperature Tevap and blender door motor influence coefficient P1.
5. the detection system of auto Air Conditioner leaving air temp according to claim 4, it is characterised in that: engine water temperature Teng and engine speed Reng is transmitted to air-conditioner controller by described control unit of engine by CAN.
6. the detection system of the auto Air Conditioner leaving air temp according to claim 4 or 5, it is characterised in that: described evaporator temperature Tevap is obtained by the temperature sensor detection arranged on an evaporator.
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| CN201410232323.3A CN103982989B (en) | 2014-05-28 | 2014-05-28 | The detection method of a kind of auto Air Conditioner leaving air temp and system |
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| CN107178883B (en) * | 2017-07-27 | 2020-03-13 | 青岛海信日立空调系统有限公司 | Method and device for calculating air outlet temperature of indoor unit of air conditioner and air conditioner |
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| JPS5919849B2 (en) * | 1979-12-13 | 1984-05-09 | トヨタ自動車株式会社 | Automatic air conditioning system for vehicles |
| JP2572635B2 (en) * | 1988-07-04 | 1997-01-16 | 株式会社ゼクセル | Air-mix door control device for automotive air conditioner |
| JP3146817B2 (en) * | 1993-12-22 | 2001-03-19 | 日産自動車株式会社 | Vehicle air conditioner |
| JP3492849B2 (en) * | 1996-05-01 | 2004-02-03 | サンデン株式会社 | Vehicle air conditioner |
| JP2002331820A (en) * | 2001-05-11 | 2002-11-19 | Denso Corp | Air conditioner for vehicle |
| CN1209592C (en) * | 2003-07-10 | 2005-07-06 | 上海交通大学 | Car air-conditioning air-supplying temp, control system |
| CN101259823A (en) * | 2007-12-27 | 2008-09-10 | 奇瑞汽车股份有限公司 | Heating and ventilating air-conditioning system and control method thereof |
| CN101876471B (en) * | 2009-04-30 | 2012-11-21 | 比亚迪股份有限公司 | Control method for air conditioning refrigerating system of automobile |
| CN101603710B (en) * | 2009-07-23 | 2011-07-20 | 芜湖博耐尔汽车电气系统有限公司 | Air conditioner for automobile |
| CN102607134A (en) * | 2012-03-26 | 2012-07-25 | 柳州职业技术学院 | Automatic air conditioner controller of bubble car |
| CN103017293B (en) * | 2012-11-30 | 2015-04-15 | 惠州市德赛西威汽车电子有限公司 | Energy-saving control method for variable-displacement compressor of air conditioner |
| CN103042895B (en) * | 2012-11-30 | 2015-04-15 | 惠州市德赛西威汽车电子有限公司 | Method for controlling outlet air temperature of automobile air conditioner |
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